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When a salt is heated with dil H(2)SO(4...

When a salt is heated with dil `H_(2)SO_(4)` and `KMnO_(4)` solution the pink colour of `KMnO_(4)` is dicharged, the mixture may contain

A

a sulphite

B

a carbonate

C

a nitrate

D

a bicarbonate

Text Solution

Verified by Experts

The correct Answer is:
A
`SO_(3)^(2-)` reduces `KMnO_(4)` to colourless `Mn^(2+)`
`5SO_(3)^(2-)+2MnO_(4)^(-) +6H^(+) to 2Mn^(2+) + 5SO_(4)^(2-)+3H_(2)O`
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